운항조건 및 해상상태가 대형 화물선의 파랑 중 굽힘모멘트에 미치는 영향

• Published in: 大韓造船學會 論文集 Vol. 40; no. 5; pp. 60 - 67
• Main Authors: 김동문(Dong Mun Kim), 백점기(Jeom Kee Paik)
• Format: Journal Article
• Language: Korean
• Published: 대한조선학회 2003
• Subjects: Sea states(해상상태); Risk assessment of ships(선박의 위험성 평가); Long-term response(장기응답); Wave-induced bending moment(파랑굽힘모멘트); Short-term response(단기응답); operational condition(운항조건)
• ISSN: 1225-1143; 2287-7355

For risk or reliability assessment of ship structures against particular hazardous situations such as total loss or sinking due to hull girder collapse, the short-term based response analysis rather than the long-term response analysis is required to determine wave-induced bending moments when the ship encounters a storm of specific duration and with a specified small encounter probability. In the present study, the effects of operational condition and sea states on wave-induced bending moments of large merchant vessels are investigated. A series of the short-term response analyses for a hypothetical VLCC and a Capesize bulk carrier (CSBC) are carried out with varying operational condition and sea states which include ship speed, significant wave height and wave persistence time, using the linear-strip theory based program ABS/SHIPMOTION and the MIT sea-keeping tables. The computed results are also compared with the IACS design formula predictions. The results and insights developed from the present study are summarized.